Packing polymorphism of dicarbonyl-[2-(phenylamino)pent-3-en-4-onato]rhodium(I)

Abstract

Packing in pairs, versus in linear arrays of [Rh(CH3COCHCN(Ph)CH3)(CO)2] Sigma-sigma interaction of rhodium molecular orbitals AIM bonding paths indicating intermolecular metallophilic Rh-Rh interactions NBO shows LP(Rh)-LP*(Rh pz) interaction Intermolecular rhodium-rhodium distance decreases with temperature

Kinetic Study of the Oxidative Addition Reaction between Methyl Iodide and [Rh(imino-β-diketonato)(CO)(PPh)3] Complexes, Utilizing UV–Vis, IR Spectrophotometry, NMR Spectroscopy and DFT Calculations

“…Varshavsky reported the synthesis and properties of 2A [ 13 ] and related Rh-dicarbonyl complexes containing β-aminivinyl ketones [ 14 ]. The structure of 2B was confirmed by solid state crystal analysis [ 15 ].…”

“…The synthesis of [Rh(CH 3 COCHCNHCH 3 )(CO) 2 ] 2A and [Rh(CH 3 COCHCNPhCH 3 )(CO) 2 ] 2B was performed as published in literature for 2B [ 15 ] and related complexes [ 16 ]. Di-µ-chloro-tetracarbonyldirhodium(I) (0.05 g, 0.1286 mmol) was dissolved in methanol (5 mL), and the ligand (0.2572 mmol), also dissolved in methanol (2 mL), was added dropwise over 10 min whilst stirring.…”

Multinuclear rhodium complexes supported by tetra-tert-butoxy disiloxide ligand: synthesis, structure, and reactivity

“…The distance between Rh2 and Rh2 0 is 3.3674(3) Å, which is within typical distances indicating Rh-Rh interaction (3.18-3.54 Å). [49][50][51][52][53][54][55] Indeed, Conradie et al reported that square-planar rhodium carbonyl complexes such as [(CO) 2 Rh(acac)] (acac = acetylacetonate) formed intermolecular rhodium chains by weak Rh-Rh interactions in a crystal packing system. [52][53][54][55] NMR analysis showed that the bis-dinuclear structure of 4 in the crystal structure should be maintained in the solution state.…”

“…[49][50][51][52][53][54][55] Indeed, Conradie et al reported that square-planar rhodium carbonyl complexes such as [(CO) 2 Rh(acac)] (acac = acetylacetonate) formed intermolecular rhodium chains by weak Rh-Rh interactions in a crystal packing system. [52][53][54][55] NMR analysis showed that the bis-dinuclear structure of 4 in the crystal structure should be maintained in the solution state. In the 13 C NMR spectrum, the signals derived from carbonyl groups coordinated to the Rh centers were observed at 181.7 ppm ( 1 J C-Rh = 74.7 Hz) and 181.3 ppm ( 1 J C-Rh = 74.4 Hz), which is consistent with the fact that Rh1 and Rh2 are non-equivalent in the solid state.…”

“…The distance between Rh2 and Rh2′ is 3.3674(3) Å, which is within typical distances indicating Rh–Rh interaction (3.18–3.54 Å). 49–55 Indeed, Conradie et al reported that square-planar rhodium carbonyl complexes such as [(CO) 2 Rh(acac)] (acac = acetylacetonate) formed intermolecular rhodium chains by weak Rh–Rh interactions in a crystal packing system. 52–55…”